Portola Hills Weather Forecast

    • 50
    • 64

    Chance Rain Showers

    • 50
    • 65

    Decreasing Clouds

    • 54
    • 72

    Sunny

    • 56
    • 76

    Mostly Sunny

    • 56
    • 78

    Mostly Sunny

    • 55
    • 76

    Partly Sunny

    • 54
    • 74

    Partly Sunny

Today 22 Oct Orange County Inland

Partly cloudy. Highs around 74.

Tonight 22 Oct Orange County Inland

Mostly cloudy with a chance of Showers. Lows 52 to 57. Light Winds. Chance of measurable precipitation 50 percent.

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Portola Hills Temperature Statistics

October Temperature

Corona Airport (13 miles)

  • Lowest 13 October, 2026

    46 °F

  • Average October

    78.1 °F

  • Highest 3 October, 2026

    107.1 °F

Climate (2021–2026)

Corona Airport (13 miles)

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  • Average Low 2021–2026

    52.4 °F

  • Average 2021–2026

    65.3 °F

  • Average High 2021–2026

    78.5 °F
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